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You need the UNHEATED version----I don't believe the E-Series ever had the heated one!
If you buy these from the dealer for about $20 they come with the new insulated tube too. If its been that long since your PCV has been checked or replaced order the throttle body elbow connector too---those have been known to split open and cause all sorts of problems.
Thanks for the reply JWA, I didn't think it was heated either.
Now the plot thickens, I got a Motorcraft EV-253 before I had a chance to look but it looks nothing like what's on my van.
The valve from the passenger side valve cover to the throttle body has Motorcraft EV-233 stamped on it. Strange since 3 different sites don't list that for my van.
The valve did rattle so I think it's good but I'll be looking for a new one still.